Improvement in car-wheels



JOHN L. KRAUSER, OI TYLERSBURt'lr, PENNSYLVANIA.

IMPROVEMENT IN CAR-WHEELS.

Spocilicalion forming part of Letters Patent No.

152,125, dated .lune 16, 1871i; application filed September 23, 1873.

To all twho-m 'it may concern:

Be it known that I, JOHN L. KRAUSER, of V'I ylersburg, in the county of Clarion and State ot' Pennsylvania, have invented an Improvement in Car-VVheels, of which the following is a specification:

This invention has for its object to produce a light and strong wheel for railroadcars, which may be easily and cheaply manufactured.

My invention consists in making the spokes of the wheel of hollow metal cylinders, and in casting the hub and tread to the ends of the spokes. The tubes composing; the latter are compressed to taper from the hub toward the tread, so that the cross-section near the hub will be an ellipse. The great advantage of this shape of spoke is that larger pipes may be used, which, by being compressed near the hub, will not interfere with each other.

An additional advantage ot' this construction of the spokes is that they will be more firmly connected to the hub than if they were to retain the cylindrical form throughout.

In the accompanying drawing, Figure l is a face-view, partly in section, of a ear-wheel of my improved construction. Fig. 2 is a trans- .'erse section thereof on the line c c, Iii g. 1.

Similar letters of reference indicate correspondin g parts in both figures.

The letter A represents the tread or tire ot' l(he wheel. B is the hub. rlhe spokes (l (l are made of hollow cylinders, preferably of gas-pipe, the diameter ot' which should be but little less than the width of the tread or tire. These spokes are compressed at their inner ends, so as to taper from the hub toward the tread, as in Fie. 2, the cross-seetion being therefore at the hub in form ot' an ellipse or oval,'and at the tread a circle. On the face of the wheel the spokes thus compressed ap pear smaller at their inner than at their outer ends, as in Fig. 1, the spokes being so set in the hub that the maior diameters of their ellipses or ovals will be parallel to the axis of the wheel.

It is eridentthat a section of each spoke C parallel to the axis ot' the wheel will show a truncated cone, Fig. 2, while a section at right angles to the axis will show an inverted truncated cone, Fig. 1.

At the outer ends a of each spoke G a screwthread is eut upon it, or it is otherwise roughened to be the more tirinly connected to the tread.

In the manufacture of the wheel the spokes O are, after being shaped in the manner described, placed in the mold in which the wheel is to be cast, and the hub and tread are then cast on them. Theinner ends b l) of the spokes will, by virtue of their conical form, be firmly held in the hub, while the tread A, covering the ronghened outer ends a n of the spokes, will thereby also be tightly attached to them.

rIhe tire is preferably made ofcast-steel, and inthe process of casting the pipes are suitably plugged at or near their ends to prevent the east metal from llowin g in. Pipes may be employed ot' which the diameter is greater than the width ofthe tread or tire, and in this case their ends may be flattened in suitable direction.

I claim as my invention and desire to secure by Letters Iatent- The car-wheel, havin g the tread A and hub B made of east metal, and the spokes C made of tubes flattened at their inner ends to form. elli pses, with their major axes parallel with the axis of the wheel, substantially as and for the purpose shown and set forth.

JOHN L. KRAUSER. iVitnesses:

(.fYnUs KnAUsEn, .L .T. LiViNGs'loN. 

